16747400 celle they permit exchange between the external atmosphere and the circulatory system
Answer:
ANS - Autonomic Nervous system.
Explanation:
Autonomic nervous system (ANS) is responsible for regulating the involuntary control of smooth, heart muscles and some glands and organs.
Whereas the somatic nervous system (SNS) regulates the voluntary contraction of the skeletal muscles.
Fossil evidence because these changed occur over long time periods (millions of years).
Answer:
naturalistic observation
Explanation:
The best possible way to study how tigers interact with each other in their habitats would be to use a naturalistic observation. This type of observation focuses on observing the main subject of the study in it's natural environment without interfering in any sort of way. This allows the scientists to observe exactly how the tigers interact when there are no humans around.
Hey there......
Area of the retina without rods or cones, where the optic nerve exits the back of the eye. In the retina, the specialized neurons that connect the rods and cones with the ganglion cells. Carries information to the brain. Blind spot is where optic nerve leaves the eye<span>. = NOT WHAT YOU WANT RIGHT WELL SCROLL DOWN FOR BETTER :)
</span><span>optic chiasm</span><span>
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